function UrlParmValue(u){
	var data, index;
	if (u != '') {  
		data = [];  
	    index = {};  
	    var parms = decodeURIComponent(u).split('&');  
	    for (var i = 0, len = parms.length; i < len; i++) {  
	      if (parms[i] != '') {  
	         var p = parms[i].split("=");  
	          if (p.length == 1 || (p.length == 2 && p[1] == '')) {// p | p=  
	            data.push(['']);  
	            index[p[0]] = data.length - 1;  
	          } else if (typeof(p[0]) == 'undefined' || p[0] == '') { // =c | =  
	            data[0] = [p[1]];  
	          } else if (typeof(index[p[0]]) == 'undefined') { // c=aaa  
	            data.push([p[1]]);  
	            index[p[0]] = data.length - 1;  
	          } else {// c=aaa  
	            data[index[p[0]]].push(p[1]);  
	          }  
	        }  
	      }  
    }
	return {  
	    // 获得参数,类似request.getParameter()  
	    parm : function(o) { // o: 参数名或者参数次序  
	      try {  
	        return (typeof(o) == 'number' ? data[o][0] : data[index[o]][0]);  
	      } catch (e) {  
	      }  
	    },
	  //获得参数组, 类似request.getParameterValues()  
	    parmValues : function(o) { //  o: 参数名或者参数次序  
	      try {  
	        return (typeof(o) == 'number' ? data[o] : data[index[o]]);  
	      } catch (e) {}  
	    },  
	    //是否含有parmName参数  
	    hasParm : function(parmName) {  
	      return typeof(parmName) == 'string' ? typeof(index[parmName]) != 'undefined' : false;  
	    },  
	    // 获得参数Map ,类似request.getParameterMap()  
	    parmMap : function() {  
	      var map = {};  
	      try {  
	        for (var p in index) {  map[p] = data[index[p]];  }  
	      } catch (e) {}  
	      return map;  
	    }  
	}
}